61625213 has 8 divisors (see below), whose sum is σ = 67275768. Its totient is φ = 56104704.

The previous prime is 61625197. The next prime is 61625219. The reversal of 61625213 is 31252616.

It can be written as a sum of positive squares in 4 ways, for example, as 11682724 + 49942489 = 3418^2 + 7067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61625213 - 2⁴ = 61625197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61625219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31520 + ... + 33417.

It is an arithmetic number, because the mean of its divisors is an integer number (8409471).

Almost surely, 2^61625213 is an apocalyptic number.

It is an amenable number.

61625213 is a deficient number, since it is larger than the sum of its proper divisors (5650555).

61625213 is a wasteful number, since it uses less digits than its factorization.

61625213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65023.

The product of its digits is 2160, while the sum is 26.

The square root of 61625213 is about 7850.1728006459. The cubic root of 61625213 is about 394.9900398065.

Adding to 61625213 its reverse (31252616), we get a palindrome (92877829).

The spelling of 61625213 in words is "sixty-one million, six hundred twenty-five thousand, two hundred thirteen".